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A Fast and Performance-Maintained Transcoding Method Based on Background Modeling for Surveillance Video

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5 Author(s)
Mingchao Geng ; Inst. of Digital Media, Peking Univ., Beijing, China ; Xianguo Zhang ; Yonghong Tian ; Luhong Liang
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Low-complexity and high-performance surveillance video Transcoding methods play an important role for a wide range of surveillance video transmission and storage applications. Towards this end, the special characteristics of surveillance video should be utilized for Transcoding. In this paper, we propose a fast and performance-maintained Transcoding method. This method firstly divides macro blocks (MBs) into foreground MBs, foreground border MBs and background MBs. Statistics show that the three categories have different distributions of prediction modes, motion vectors and reference frames. Following this, we adopt different Transco ding strategies in terms of removing the redundant prediction modes, narrowing motion search range and reducing reference frames. In particular, we propose an algorithm to exploit the decoded motion vector to adaptively calculate motion search range. Experimental results show that, compared with the recent background modeling based full-decoding-full-encoding, our Transcoding method saves more than 93% time with ignorable quality loss.

Published in:

Multimedia and Expo (ICME), 2012 IEEE International Conference on

Date of Conference:

9-13 July 2012